 Abstract multi-material 3D and 4D printing technologies have the potential to expand the design space beyond complex geometries. These technologies allow for the creation of customized multi-functional objects with low cost and ease of use. This paper compares different types of 3D and 4D printing technologies and their advantages and disadvantages. It also reviews the features and applications of multi-material 3D and 4D printed objects. Finally, it proposes new avenues for the development of multi-material 3D and 4D printed objects. This article was authored by Muhammad Rafi, Rahullah D. Farani and Daniel Teroit.